The Tyers River is a perennial river of the West Gippsland catchment, located in the West Gippsland region of the Australian state of Victoria.

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Tyers
Location of the Tyers River mouth in Victoria
Location
Country	Australia
State	Victoria
Region	South East Coastal Plain (IBRA), West Gippsland
Local government areas	Shire of Baw Baw, Latrobe City
Physical characteristics
Source	Great Dividing Range
• location	Talbot Peak
• coordinates	37°53′22″S 146°20′45″E
• elevation	1,240 m (4,070 ft)
2nd source	Tyers River West Branch
• location	below Mount Mueller
• elevation	1,130 m (3,710 ft)
3rd source	Tyers River East Branch
• location	Talbot Peak, Mount Mueller
• elevation	551 m (1,808 ft)
Source confluence	East and West branches of the Tyers River
• location	Tyers Junction
• coordinates	37°57′39″S 146°20′2″E
• elevation	260 m (850 ft)
Mouth	confluence with the Latrobe River
• location	west of Tyers
• coordinates	38°9′43″S 146°26′13″E
• elevation	35 m (115 ft)
Length	57 km (35 mi)
Basin features
River system	West Gippsland catchment
Tributaries
• right	Jacobs Creek (Victoria)
National park	Baw Baw National Park
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The Tyers River rises below Talbot Peak, part of the Great Dividing Range, within the Baw Baw National Park at an elevation of 1,240 metres (4,070 ft) and descends steeply. At Tyers Junction the river is joined by the confluence of the Tyers River West Branch that drains the eastern slopes of Mount Mueller from an elevation of 1,130 metres (3,710 ft) and the Tyers River East Branch that drains the southern slopes of Talbot Peak from an elevation of 551 metres (1,808 ft). The river flows in a highly meandering course generally south, then south by east, through the Moondarra State Park, joined by one minor tributary, before reaching its confluence with the Latrobe River west of Tyers in the Latrobe City local government area. The river descends 1,200 metres (3,900 ft) over its 57-kilometre (35 mi) course.^[2]

The Tyers River is impounded by the Moondarra Reservoir, at the junction of the Tyers River and Jacobs Creek. The 30,400 thousand cubic metres (1,070×10^⁶ cu ft) reservoir is predominantly used to augment domestic water supplies.^[3]

The Tyers River sub-catchment area is managed by the West Gippsland Catchment Management Authority.

• Rivers of Victoria